SysMLv1: MagicDraw/Cameo: Oh no, I lost my part or reference property? Where did it go? The Symbol Properties option for 'Show Association ends as Attributes' may help you find it!
SysMLv1: A part Property or reference Property is not necessarily a 'memberEnd' or 'ownedEnd' of an Association ('association' or 'owningAssociation'). But an Association always as at least 2 'memberEnd' Properties. (With some MagicDraw/Cameo tool tips.)
SysML1.x: MagicDraw/Cameo: The reference property concept is implemented using a vendor-specific stereotype extension ReferenceProperty
Cameo Simulation Toolkit: GOTCHA: In the Variable pane reference properties are hidden by default (show them using the Options pulldown menu)
SysML Reference Property representations Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 08:01: The building Blocks of SysML Slide kind SysML Block Definition Diagram (BDD)
A reference property is shown by a dashed-outline box, consistent with UML. Source OMG Systems Modeling Language (SysML) 1.6
Four general categories of properties of blocks are recognized in SysML: parts, references, value properties, and constraint properties. Source OMG Systems Modeling Language (SysML) 1.6
Part, reference, value, and constraint properties may be shown in block definition compartments with the labels "parts," "references," "values," and "constraints" respectively. Source OMG Systems Modeling Language (SysML) 1.6
A property typed by a Block that does not have composite aggregation is classified as a reference property. Source OMG Systems Modeling Language (SysML) 1.7beta1
A block can include properties to specify its values, parts, and references to other blocks. Source OMG Systems Modeling Language (SysML) 1.6
If any of the properties named in the path name string identifies a reference property, the property box is shown with a dashed-outline box, just as for any reference property on an internal block diagram. Source OMG Systems Modeling Language (SysML) 1.6